656624426656 has 24 divisors (see below), whose sum is σ = 1410250189824. Its totient is φ = 298465648320.

The previous prime is 656624426651. The next prime is 656624426663.

656624426656 is nontrivially palindromic in base 10.

656624426656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 656624426656.

It is not an unprimeable number, because it can be changed into a prime (656624426651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932704800 + ... + 932705503.

It is an arithmetic number, because the mean of its divisors is an integer number (58760424576).

Almost surely, 2^656624426656 is an apocalyptic number.

It is an amenable number.

656624426656 is an abundant number, since it is smaller than the sum of its proper divisors (753625763168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656624426656 is a wasteful number, since it uses less digits than its factorization.

656624426656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865410324 (or 1865410316 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 58.

The spelling of 656624426656 in words is "six hundred fifty-six billion, six hundred twenty-four million, four hundred twenty-six thousand, six hundred fifty-six".